is 2 304883 - 1
has 91779 decimal digits
takes 0.002 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LEC91E0F22D68DA__double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26797.460171.6418%131072131072000.00863.1305%97.468772.5296%0.8878%
PrimeNet2400.000052.5000%3200900000.000115.6014%0.000159.9106%7.4106%
GPU722440.000056.8182%55001500000.000111.4187%0.000161.7490%4.9308%
Difference+23+97.4601+14.8236%+125572+12957200+0.0085-8.2882%+97.4686+10.7806%+10.7806%

Known prime factors (1 factor, 63.6 bits, 0.02084608% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
304883135614736164207719132063.55622240455545932
22 × 13 × 23 × 18595698617
2007-08-21231859569861710.82710.44719.511

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-06-30T00:00:00ANONYMOUSv4_computers110001100000---0.001--0.793%
2002-06-09T00:00:00ANONYMOUSv4_computers327683276800---0.002--1.609%
2002-08-10T00:00:00ANONYMOUSv4_computers655366553600---0.004--2.306%
2003-03-16T00:00:00ANONYMOUSv4_computers13107213107200---0.009--3.131%
2006-01-15T00:00:00Jocelyn Larouchev4_computers304883304883---0.003--1.197%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-04-23T21:47:58nordisweet1610000000101000000027--0.694
2021-05-01T04:00:17nordisweet1610000000101000000065--0.694


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-04-12T00:00:00ANONYMOUSv4_computers21254--0.008--
2022-03-07T06:12:06LordJuliusManual testing254255--0.008--
2001-03-05T00:00:00ANONYMOUSv4_computers21256--0.031--
2002-02-24T00:00:00ANONYMOUSv4_computers21257--0.063--
2004-01-27T00:00:00ANONYMOUSv4_computers21258--0.126--


ECM factoring results:

Old Calculation Method

Total ECM effort:13.821 GHz-days
Estimated T-Level:27.203
DigitsB1CurvesCompleteFacMiss
2011000573 / 1005.7300.315%
2550000573 / 2802.04612.872%
30250000282 / 6400.44164.341%

New Calculation Method

Total ECM effort:13.821 GHz-days
Estimated T-Level:27.203
DigitsB1CompleteFacMiss
201100038.1010.000%
25500005.1890.558%
302500000.52559.127%
3510000000.04295.872%
4030000000.00399.722%


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
5000050000002912.221
250000250000001425.418
250000367500001406.182


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2001-12-01T00:00:00ANONYMOUSv4_computersEC91E0F22D68DA__0.002


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-22T15:37:17Oliver KruseDoppelherz
13561473616420771913
B384B9A26E9B82__no
2017-09-24T17:45:39Oliver KruseManual testing
13561473616420771913
B384B9A26E9B82__no
2017-10-12T22:24:09Oliver KruseGTX-1B384B9A26E9B82__no
2017-12-11T07:53:26ATHxps
13561473616420771913
B384B9A26E9B82__no
2020-04-18T07:19:22Oliver KruseAddPrpType5
13561473616420771913
056C163A441BEA__no


P-1 factor-bounds graph:
B1 = 131072, B2 = 13107200 (P-1 stage 2)
B1 = 65536, B2 = 6553600 (P-1 stage 2)
B1 = 304883 (P-1 stage 1)
B1 = 32768, B2 = 3276800 (P-1 stage 2)
B1 = 131072 (P-1 stage 1)
B1 = 11000, B2 = 1100000 (P-1 stage 2)
B1 = 65536 (P-1 stage 1)
B1 = 32768 (P-1 stage 1)
B1 = 11000 (P-1 stage 1)
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TF factor-bounds graph:
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2100
Last modified: 2022-03-07T06:12:06+00:00